usb: gadget: uvc: configfs: Sort frame intervals upon writing

Browse source

There is an issue where the host is unable to tell the gadget what frame
rate it wants if the dwFrameIntervals in the interface descriptors are
not in ascending order. This means that when instantiating a uvc gadget
via configfs the user must make sure the dwFrameIntervals are in
ascending order.

Instead of silently failing the breaking of this rule, we sort the
dwFrameIntervals upon writing to configfs.

Signed-off-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

...

This commit is contained in:

Paul Elder 2018-09-02 19:46:03 -04:00 • committed by Laurent Pinchart

parent cb2200f7af

commit 89969a842e

1 changed files with 13 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

13

drivers/usb/gadget/function/uvc_configfs.c

View file